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Record 15 of 1372
Curves of growth for van der Waals broadened spectral lines
External Online Source: doi:10.1016/0022-4073(80)90092-8
Author and Affiliation:
Park, C.(NASA Ames Research Center, Moffett Field, Calif., United States)
Abstract: Curves of growth are evaluated for a spectral line broadened by the van der Waals interactions during collisions. The growth of the equivalent widths of such lines is shown to be dependent on the product of the perturber density and the 6/10 power of the van der Waals potential coefficient. When the parameter is small, the widths grow as the 1/2 power of the optical depth as they do for the Voigt profile: but when the parameter is large, they grow as 2/3 power and, hence, faster than the Voigt profile. An approximate analytical expression for the computed growth characteristics is given.
Publication Date: Oct 01, 1980
Document ID:
19800067208
(Acquired Nov 30, 1995)
Accession Number: 80A51378
Subject Category: ATOMIC AND MOLECULAR PHYSICS
Document Type: Journal Article
Publication Information: Journal of Quantitative Spectroscopy and Radiative Transfer; 24; Oct. 198
Publisher Information: United Kingdom
Financial Sponsor: NASA; United States
Organization Source: NASA Ames Research Center; Moffett Field, CA, United States
Description: 4p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: LINE SPECTRA; SPECTRAL LINE WIDTH; VAN DER WAALS FORCES; SPACECRAFT REENTRY; VOIGT EFFECT
Imprint And Other Notes: Journal of Quantitative Spectroscopy and Radiative Transfer, vol. 24, Oct. 1980, p. 289-292.
Miscellaneous Notes: p. 289-292
Availability Source: Other Sources
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